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July 10, 1923. 1.461.706

G. E. FORCE I RADIATOR CAP Filed May 12. 1922 ig 1 11mm N 16 [j Fatented July 10, 1923.

GERALD n. roses, on NEW YORK, N. Y.,

ASSIGNOR TO HELMET GA]? COMPANY, OF

NEW YORK, N. Y.

RADIATOR GAP.

Application filed May 12 To all whom it may concern:

Be it known that I, GERALD E. FoRon, a citizen of the United States, residing at New York, in the countyoi New York and State of New York, have invented new and useful Improvements in Radiator Gaps, oi which the following is a specification.

This invention relates generally to cap-1e taining means of the character disclosed by me in a co-pendingapplication filed April 11, 1921, Serial Number 160,1-9-i, and principally to improvements adapting the in vention to the filling caps of automobile and aeroplane motor radiators.

An essential object of the invention is to provide a retaining member and a radiator cap associated in a novel manner and capable of relative adjustments when in assembled relation. K

lVith these and other objects in view, which will become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which like characters of reference indicate like parts throughout the several figures, of which:

Figure 1 is a view, partly in elevation and partly in section, showing the radiator cap in closed position;

Figure 2 is a similar view showing'the cap in open position;

Figure 3 is a vertical, central, sectional view of the radiator cap; and

Figure 4 is a similar view of the cap-retaining ring.

Describing the invention in detail, 10 designates the filling neck or collar of a conventional automobile radiator having the usual threaded extension 11 for receiving cap 12. In applying the invention to the structure thus described, a retainer ring or band 13 is hingedly connected to the extension, as at 14;, for swinging movement over upon the extension as in Figure 1, or to oneside thereof as in Figure 2. The diameters of the extension and of the ring are the same and both members are threaded externally as illustrated so that, in fact, when the extension is surmounted by the ring, the lat-' ter forms, as it were, a continuation of the threaded extension.

Cap 12 of the radiator is carried by ring 13, which screws into the cap as shown in 1922. Serial No. 560,430.

the drawings. The threaded portion ofthe cap, it will be noted, is thickened to provide shoulder 15 which is engaged by lugs 16 of the retaining ring to prevent separation of the ring and cap. Lugs 16 are integral with ring 13 and are bent at right angles tothe ring subsequent to the screwing of the latter into the radiator cap. any suitable implement may be employed for bending the lugs to which access may be conveniently had through the opening in the ring.

lVhen the cap is in closing position over the filling orifice of the radiatorit may be readily screwed down onto extension 11 and past the threads of ring 13 as seen in Figure 1. When the cap is unscrewed and swung to one side, as in Figure 2, it may not however be turned back past the threads of the retainer rings, since lugs 16 of the latter abut shoulder 15 andprevent further unscrewing of the cap. Hence, the absolute separation of the cap and ring is prohibited and the liability of losing or misplacing the can is prevented.

Radiator caps of the general type now in use have proven unsatisfactory owing to their prevalence for being misplaced when filling the radiator, and the further fact of becoming disengaged or lost owing to the vibration of the motor. Especially is the latter true in connection with aeroplane mo tors, and it was to overcome these deficiencies as well as others that I have designed the form of closure forming the subject matter of this invention.

In practice, I have found that the form of my invention illustrated in the accompanying drawings and referred to in the above description, as the preferred embodiment, is the most efiicient and practical; yet realizing the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize that various minor changes in details of construction, proportion and arrangement or parts, may be resorted to within the scope of the appended. claims without departing from or sacrificing any of the principles of this invention.

Having thus described my invention, and without enumerating variations and equivalents, what I desire protected by Letters Patent is as set forth in the following claims:

1. The combinatioi'i with aradiator filling neck and an internally shouldered cap adapt ed to fit thereover, of a cap-retaining memher contained within the cap and held against separation therefrom by engagement with said shoulder, and a connection between the retaining member and neck permitting the retaining member to be moved to positions overlying or lateral of the neck.

2. The combination with a radiator filling neck, of a cap adapted to fit thereover and provided with an internal shoulder, a re taining member contained within the cap in reciprocal engagement therewith, lugs on. the retaining member engage-able with said shoulder, and a connection between the retaining' member and neck adapted to permit ed to fit over said neck, a retaining member in the form of an open-centered ring insert ed in said cap in reciprocal engagement with the inner wall thereof, a lug projecting from the lower edge of the retaining member pivotally secured to said neck and lugs projecting from the upper edge of the retaining member engageable with the internal shoulder of the cap.

GERALD E. FORCE.

Witnesses ERNESTINE H. BAKER, ERNEST HAMLIN BAKER. 

